It is important to make assessment of water resources their magnitude, distribution and scope of utilization. It is also important to have an idea of the present and future demands of water for various uses e.g. industrial, irrigational and domestic purposes in public health point of view. In the present study it has attempted to assess water quality of ‘Kaliasot dam’ for a period of one year 2007-08 in monsoon, winter and summer seasons. The samples were collected from different points to cover complete dam area. The parameters observed are temperature, pH, Electrical conductance, turbidity, Total solids, TDS, SS, Nitrates, Phosphate, chloride, Alkalinity, Total hardness, Ca^-H, Mg^-H, D.O., BOD, COD, Na, K, Sulphate & Fluoride, all physico-chemical parameters